ini-config : always reenable xtrace on return
ini-config : always reenable xtrace on return

These return paths doesn't renable xtrace, so output mysteriously goes
missing until the next time it is enabled.

Change-Id: I3a8018dfa9397c07534970c39fba8dc10afcbe41

costingalan/devstack,noironetworks/devstack,thomasem/devstack,nawawi/openstack,mmasaki/devstack,vishnugonela/devstack,costingalan/devstack,bswartz/devstack,prithivm/branch01,bswartz/devstack,richliu/devstack,pczerkas/devstack,olivierlemasle/devstack,vishnugonela/devstack,nawawi/openstack,varunarya10/devstack,group-policy/devstack,liuquansheng47/devstack,mc2014/devstack,samgoon/devstack,samgoon/devstack,pacinete/devstack,Mahito/devstack,vsham20/devstack,pacinete/devstack,mssumanth/devstack,openstack-dev/devstack,olivierlemasle/devstack,upadhyay-prashant/devstack,thomasem/devstack,ozamiatin/devstack,varunarya10/devstack,group-policy/devstack,noironetworks/devstack,TwinkleChawla/devstack,bigswitch/devstack,parul24/devstack,bq-xiao/devstack,avvocatodemarchis/devstack,HPCHub/devstack,eharney/devstack,avvocatodemarchis/devstack,pombredanne/devstack,dirkmueller/devstack,mssumanth/devstack,richliu/devstack,mc2014/devstack,dtroyer/devstack,dirkmueller/devstack,liuquansheng47/devstack,Mahito/devstack,ozamiatin/devstack,vsham20/devstack,atulpatil301/devstack,HPCHub/devstack,dtroyer/devstack,prithivm/branch01,eharney/devstack,upadhyay-prashant/devstack,bigswitch/devstack,parul24/devstack,pczerkas/devstack,mmasaki/devstack,TwinkleChawla/devstack,pombredanne/devstack,bq-xiao/devstack,openstack-dev/devstack,atulpatil301/devstack